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Common questions
Common Questions
25 totalWhat type of heating and cooling systems is the PRO TH4210D compatible with?
The PRO TH4210D is designed to control 24 VAC heat pump systems with auxiliary heat, specifically 2 heat/1 cool configurations. It supports Heat, Off, Cool, and Em Heat system settings, as well as Auto and On fan settings. (Page 2)
What should I do if the thermostat display is blank?
Check the circuit breaker and reset it if necessary, and make sure the heating and cooling power switches are on. Also verify that the equipment door is securely closed, and if the thermostat is battery powered, ensure fresh AA alkaline batteries are installed. (Page 11)
How do I enter the installer setup on the PRO TH4210D?
Press and hold both the up and down arrow buttons simultaneously until the display changes to show the setup function number. You can then press the arrow buttons to change settings and advance through functions, and press and hold to exit and save settings. (Page 7)
What are the acceptable temperature setting ranges for heating and cooling?
The heat temperature range is 40° to 90°F (4.5° to 32°C), and the cool temperature range is 50° to 99°F (10° to 37°C). If temperature settings do not change, ensure you are setting temperatures within these acceptable ranges. (Page 11)
Can the PRO TH4210D run on batteries, and what happens during a power outage?
Yes, the thermostat can be powered by batteries alone or used with AC power where batteries serve as backup. During power interruptions, the batteries will save time and day settings and continue to power the display. Two AA alkaline batteries are included in the package. (Page 6)
Where should I install the thermostat and what locations should I avoid?
Install the thermostat about 5 feet (1.5m) above the floor in an area with good air circulation at average temperature. Avoid locations affected by drafts, dead spots behind doors or corners, hot or cold air from ducts, direct sunlight or radiant heat from appliances, concealed pipes or chimneys, or unheated/uncooled outside walls behind the thermostat. (Page 3)
Show 19 more questions
What gauge wire should be used when wiring the PRO TH4210D?
What should I do with my old thermostat if it contains mercury?
What type of heating and cooling system is the PRO TH4210D designed to control?
What are the acceptable temperature setting ranges for heat and cool modes?
How do I enter the installer setup mode to configure the thermostat?
Can the thermostat run on batteries, and what happens during a power outage?
Where is the best location to install the PRO TH4210D thermostat?
What gauge wire should be used when wiring the thermostat?
What does the Em Heat setting do, and how does it affect the compressor?
Where should I install the Pro Th4210D thermostat in my home?
What type of wire should I use to connect the Pro Th4210D?
Do I need to connect the C (common wire) terminal for the thermostat to work?
How do I install batteries in the Pro Th4210D?
What should I do if the display is blank?
What does it mean when 'Cool On' or 'Heat On' is flashing on the display?
What are the acceptable temperature ranges for heating and cooling?
What is Adaptive Intelligent Recovery and how does it work?
How do I mount the thermostat to the wallplate?
What is the purpose of the compressor protection feature?
Full Manual
15 pages
Installation Guide
Th4210D
Programmable Thermostat
Product Application This thermostat provides electronic control of 24 VAC heat pump systems with aux- iliary heat (2 heat/1 cool). Must be installed by a trained, experienced technician • Read these instructions carefully. Failure to follow these instructions can dam- age the product or cause a hazardous condition. • Check the ratings in this booklet to verify that this product is suitable for your application (see page 12). • Always test for proper operation after installation (see pages 7-8).
Caution: Electrical Hazard
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.Mercury Notice
If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal. ® U.S. Registered Trademark. Patents pending. Copyright © 2005 Honeywell International Inc. All rights reserved. Power Type • Battery power • Common wire • Common wire with battery backup System Settings • Heat, Off, Cool, Em Heat Fan Settings • Auto, On
PRO TH4210D Programmable Thermostat 1 Install the thermostat about 5 feet (1.5m) above the floor in an area with good air circulation at average temperature. Do not install in locations where the thermostat can be affected by:
No
No
No
Installation Pre-installation checklist ................2 Wallplate installation ......................3 Wiring..............................................4 Wiring diagrams ..............................5 Installer Setup Battery installation ..........................6 Thermostat mounting ....................6 Installer setup..................................7 Installer system test ........................7 Appendices Adaptive Intelligent Recovery ........9 Compressor protection ..................9 Quick reference to controls..........10 Quick reference to display............10 In case of difficulty ......................11 Accessories....................................12 Specifications ................................12 Table of contents Installation tips
Installation Guide 2 Pre-installation checklist Package contents Check to make sure your package includes the following items: • PRO TH4210D digital thermostat (wallplate attached to back) • Operating manual • Wall anchors and mounting screws (2 each) • AA alkaline batteries (2) • Quick reference card Required tools & supplies • No. 2 Phillips screwdriver • Small pocket screwdriver • Drill • Drill bit (3/16” for drywall, 7/32” for plaster) • Hammer • Pencil • Electrical tape • Level (optional)
PRO TH4210D Programmable Thermostat 3 Wallplate installation Remove the wallplate from the ther- mostat as shown at left, then follow directions below for mounting. 1 Pull wires through wire hole. 2 Position wallplate on wall, level and mark hole positions with pencil. 3 Drill holes at marked positions as shown below, then tap in supplied wall anchors. 4 Place wallplate over anchors, insert and tighten mounting screws. 5 Insert quick reference card in slot in front of wall plate. Grasp top and bottom of wallplate and pull to remove from thermostat. Drill 3/16” holes for drywall. Drill 7/32” holes for plaster. Wall anchors Mounting screws Wire hole Insert quick reference card after wallplate is mounted (see mounting instructions, below)
Installation Guide 4 Wiring 1 Loosen screw terminals, insert wires into terminal block, then re- tighten screws. 2 Push excess wire back into the wall opening. Keep wires in shaded area as shown at left. 3 Plug the wall opening with non- flammable insulation to prevent drafts from affecting thermostat operation. Terminal Designations
E
Emergency heat relay. Aux Auxiliary heat relay.Y
Compressor contactor.G
Fan relay.O
Heat pump changeover valve energized in cooling.L
Heat pump reset.R
Power wire from secondary side of system transformer.B
Heat pump changeover valve energized in heating.C
Common wire from secondary side of system transformer. Terminal blockNotes
C terminal The C (common wire) terminal is optional when thermostat is powered by batteries. L terminal Heat pump reset. L terminal is powered con- tinuously when thermostat is set to Em Heat. Wire specifications Use 18- to 22-gauge thermostat wire. Shielded cable is not required. Keep wires in this shaded area CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage. Disconnect power before wiring. Wiring
PRO TH4210D Programmable Thermostat 5 1 Power supply. Provide disconnect means and overload protection as required. 2 Optional 24 VAC common connection. 3 Use either O or B terminals for changeover valve. 4 L terminal is powered continuously when thermostat is set to Em Heat. 5 Install field jumper between E and Aux if there is no emergency heat relay. Wiring diagram
Installation Guide 6 AC Power The thermostat can be powered by 24 VAC power, or by batteries. To wire the thermostat for AC power, connect the common side of the transformer to the “C” terminal as shown at left. Connect common side of transformer to “C” terminal Install batteries in back of thermostat (optional if AC powered). Battery Power The thermostat can be powered by batteries alone or, if used with AC power, can provide backup power. During power interruptions the batteries will save time/day settings and power the display. To Mount Thermostat Align the 4 tabs on the wallplate with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps in place. Power options & mounting
PRO TH4210D Programmable Thermostat 7 6 5 To begin, press and hold the and buttons until the display changes Function number Press to change settings Press to advance to next function Press and hold to exit and save settings Setting Installer setup Follow the procedure below to configure the thermostat to match the installed heating/cooling system, and customize feature operation as desired. Setup Installer system test After completing the installer setup above, press the button again to begin a system test (see next page). Press and hold both buttons Setup Function Settings & Options 5 For gas or oil furnaces of less than 90% efficiency 1 For steam or gravity systems 3 For hot water systems & furnaces of over 90% efficiency 9 For electric furnaces [Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH] 9 For electric emergency heat 1 For steam or gravity systems 3 For hot water systems & furnaces of over 90% efficiency 5 For gas or oil furnaces of less than 90% efficiency [Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH] 3 Recommended for most compressors [Other cycle rate options: 1, 2, 4, 5 or 6 CPH] 1 On **See page 9 0 Off 0 Fahrenheit 1 Celsius 5 Five-minute compressor off time **See page 9 [Other options: 0, 1, 2, 3 or 4-minute off time] Auxiliary heat cycle rate (CPH: cycles/hour) Emergency heat cycle rate (CPH) Compressor cycle rate (CPH) Adaptive Intelligent Recovery Temperature display Compressor protection 6 8 9 13 14 15
Installation Guide 8 10 0 Test 10 20 30 70 Heating system Emergency heat Cooling system Thermostat information (for reference only) 0 Compressor and fan turn off. 1 Compressor and fan turn on. 2 Auxiliary heat turns on. 0 Heat and fan turn off. 1 Heat and fan turn on. 2 Auxiliary heat turns on. 0 Compressor and fan turn off. 1 Compressor and fan turn on. 71 Software revision number (major revisions) 72 Software revision number (minor revisions) 73 Configuration identification code (major) 74 Configuration identification code (minor) 75 Production configuration date code (week) 76 Production configuration date code (year) System Test System Status Installer system test
Caution: Equipment Damage Hazard
Compressor protection (minimum off time) is bypassed during testing. To prevent equipment damage, avoid cycling the compressor quickly. System switch System test number System status Follow the procedure below to test the heating and cooling system. 1 Set SYSTEM switch to Heat. 2 Press to turn on and check systems (see table, below). 3 Press until systems turn off. 4 Set SYSTEM switch to Em Heat and repeat steps 2-3 above. 5 Set SYSTEM switch to Cool and repeat steps 2-3 above. 5 Press and hold to terminate test at any time.
PRO TH4210D Programmable Thermostat 9 Built-in compressor protection (Setup Function 15) This feature helps prevent damage to the compressor. Damage can occur if the compressor is re- started too soon after shutdown.This feature forces the compressor to wait for a few min- utes before restarting. During the wait time, the message Cool On or Heat On will flash on the display.When the safe wait time has elapsed, the message stops flashing and the compressor turns on. Inside Set To 75 6:30
Am 75
Cool On ° ° Message flashes until safe restart time has elapsed Wake Wed Adaptive Intelligent Recovery™(Setup Function 13) Adaptive Intelligent Recovery eliminates guesswork when setting your schedule.It allows the thermostat to “learn”how long your furnace and air conditioner take to reach the temperature you want. Just set your program schedule to the time you want the house to reach your desired temperature.The thermostat then turns on the heating or cooling at just the right time to reach your scheduled temperature at your scheduled time. For example: Set the Wake time to 6 am, and the temperature to 70°.The heat will come on before 6 am, so the temperature is 70° by the time you wake at 6.
Installation Guide 10 Quick reference to controls • Set: Press to set time/day/ schedule • Hold: Press to override programmed temperature control. • Run: Press to resume program schedule System switch • Cool: Thermostat controls only the cooling system. • Heat: Thermostat controls only the heating system. • Off: Heating and cooling systems are off. • Em Heat: Thermostat controls emergency and auxiliary heat. Compressor is locked out. Fan switch On: Fan runs continuously. Auto: Fan runs only when heating or cooling system is on. Temperature adjustment Inside Set To 75 6:30
Am 75
Wake Em Aux Heat On ° ° Replace Batt Recovery Quick reference to display screen Current inside temperature Low battery warning Adaptive Intelligent Recovery Current program period Wake/Leave/Return/Sleep Temperature setting System status Em: Emergency heat on Aux: Auxiliary heat on Heat On/Cool On: (Flashes when waiting for compressor restart) Wed Current day/time
PRO TH4210D Programmable Thermostat 11 In case of difficulty If you have difficulty with your thermostat, please try the suggestions below. Most problems can be corrected quickly and easily. Display is blank • Check circuit breaker and reset if necessary. • Make sure heating & cooling power switches are on. • Make sure equipment door is securely closed. • If battery powered, make sure fresh AA alkaline batteries are installed. Temperature settings do not change Make sure heating and cooling temperatures are set to acceptable ranges: • Heat: 40° to 90°F (4.5° to 32°C). • Cool: 50° to 99°F (10° to 37°C). Heating system does not respond (“Heat On” appears on screen) • Check for 24 Vac at the equipment on the secondary side of the trans- former between power and common. If voltage is not present, check the heating equipment to find the cause of the problem. • Check for 24 Vac between the heat terminal (Y) and the transformer common. If 24 Vac is present, the thermostat is functional. Check the heating equipment to find the cause of the problem. • Check for loose or broken wires between the thermostat and the heating equipment. Cooling system does not respond (“Cool On” appears on screen) • Check for 24 Vac at the equipment on the secondary side of the trans- former between power and common. If voltage is not present, check the cooling equipment to find the cause of the problem • Check for 24 Vac between the cooling terminal (Y) and the transformer common. If 24 Vac is present, the thermostat is functional. Check the cooling system to find the cause of the problem. • Check for loose or broken wires between the thermostat and the cooling equipment. “Cool On” or “Heat On” is flashing • Compressor protection timeout is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor. “Heat On” is not displayed • Set the System switch to Heat, and set the temperature level above the current room temperature. “Cool On” is not displayed • Set the System switch to Cool, and set the temperature level below the current room temperature.
Installation Guide 12 Accessories Please contact your distributor to order accessories. Cover plate assembly ............................................Part Number 50002883-001 (Used to cover marks left by old thermostats.) Specifications Temperature Ranges • Heat: 40° to 90°F (4.5° to 32°C) • Cool: 50° to 99°F (10° to 37°C) Operating Ambient Temperature • 32° to 120°F (0° to 48.9°C) Shipping Temperature • -20° to 120°F (-28.9° to 48.9°C) Operating Relative Humidity • 5% to 90% (non-condensing) Physical Dimensions • 3-13/16” H x 5-3/8” W x 1-1/4” D • 97 mm H x 137 mm W x 32 mm D Electrical Ratings System Voltage (50/60Hz) Running Current Heat (1st stage) 20-30 Vac
0.02-1.0 A
Emergency heat 20-30 Vac0.02-1.0 A
Auxiliary heat 20-30 Vac0.02-1.0 A
Cooling 20-30 Vac0.02-1.0 A
Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 http://yourhome.honeywell.com Automation and Control Solutions Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers. ® U.S. Registered Trademark. © 2005 Honeywell International Inc. Patents pending. All rights reserved. 69-1763 • 06-2005 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9